feat: JWT 인증 필터에서 검증 토큰 처리 로직 개선

Author: fivedragon5

src/main/java/org/ject/support/common/security/jwt/JwtAuthenticationFilter.java

@@ -63,12 +63,11 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
 
             if (verificationToken != null) {
                 if (jwtTokenProvider.validateToken(verificationToken)) {
-                    // 토큰이 유효한 경우, 인증 정보를 SecurityContext에 설정
-                    Authentication auth = jwtTokenProvider.getAuthenticationByToken(accessToken);
+                    String email = jwtTokenProvider.extractEmailFromVerificationToken(verificationToken);
+                    Authentication auth = createVerificationAuthentication(email);
                     SecurityContextHolder.getContext().setAuthentication(auth);
                 } else {
-                    clearAuthCookie(response, "Authentication auth = jwtTokenProvider.getAuthenticationByToken(accessToken);\n" +
-                            "                    SecurityContextHolder.getContext().setAuthentication(auth);");
+                    clearAuthCookie(response, "verificationToken");
                     SecurityContextHolder.clearContext();
                 }